The classic two-player game: drop discs into the grid and try to make a line of four — horizontally, vertically or diagonally.
Goal: Be the first to get four of your own discs in a row.
The grid has 7 columns and 6 rows. Players take turns choosing a column and dropping a disc of their colour into it; the disc falls to the lowest free cell.
The first player to line up four discs of their colour horizontally, vertically or diagonally wins.
If the grid fills up and nobody has four in a row, the game is a draw.
The central columns give more chances to build a line. Always watch your opponent's diagonals too!